Apparatus for hardening the teeth of card-clothing, &amp;c.



L. 0. SCHNEIDER. APPARATUS FOR HARDENING THE TEETH OF CARD CLOTHING; aw.

APPLICATION FILED JAN. 12, 1909.

k Patented May 17, 1910.

2 SHEETS-SHEET 1.

Law W MW vzm fl L. G. SCHNEIDER.

APPARATUS FOR HARDENING THE TEETH OF CARD CLOTHING, 6w. APPLICATIONFILED JAN. 12, 1909.

%8326, Patnted May 17, 1910.

2 SHEETS-SHEET 2.

an s" LOUIS CONSTANTIN SCHNEIDER, OF MITTW'EIDA, GERMANY.

APPARATUS FOR HARDENING THE TEETH OF CARD-CLOTHING, &c.

ceases.

Specification of Letters Patent.

Patented May 1'7, 1910.

Application filed January 12, 1909. Serial No. 471,930.

To all whom it may concern:

Be it known that 1, Louis CoNsTAN'rIN dom of Saxony, German Empire, haveinvented a new and useful Improvement in Apparatus for Hardening theTeeth of Card- Clothing or the Points of Toothed Tires forcarding-Machines or the Like, of which the following is a specification.

This invention has for its object an improvement in apparatus forhardening the teeth of card clothing or the points of toothed wires forcarding machines or the like.

In face of known processes for hardening teeth or toothed wires, theprocess used in combination with the improved apparatus forming theobject of the present invention is characterized in that the tooth orwire points heated to redness are passed immediately through a jet ofcold or fresh water,

continuously rising through pressure, the,

rising height of which is capable of being adjusted according to how farthe points of the teeth or how high up the points of the wires are to behardened.

The apparatus constructed according to the present invention consists ofa pipe or tube-like hollow body arranged as near as possible to thepoint where the teeth or toothed wires are heated to redness andconnected to a suitable water supply. This pipe or tube-like hollow bodyis provided with a slot extended over its entire length and allowing thewater supplied under pressure to issue in the shape of a fountain-likejet. The rising-height of such fountain-like jet can be adjusted orregulated, as required by a suitable adjusting device inserted into thewater supply. The slit pipe or tube-like hollow body is in communicationwith a suitable water-supply in such a manner that the water issuingfrom the slot will rise to the same height throughout. The length of theslot provided for the free issue of the cooling water jet may beregulated by suitable slides or the like.

Instead of the slit pipe two pipes surrounding or encircling one anothermay be used, the inside one of which is connected to the water supplybeing under pressure whereas each of them is provided with a slot oflongitudinal openlng arranged in such a manner that on suitably turningboth pipes within each other the slot for the issue of cooling-water jetis more or less widened and thus the time or period which the teeth orpoints of the wires to be hardened remain within the permanently risingcooling-water jet, may be regulated at will. Furthermore, a slit pipe ortubelike hollow body may also be used composed of two mold shaped hollowparts connected in such a manner that the width of the slot for theissulng cooling-water jet may also be regulated at will. \Vith this formof construction especially adapted for hardening card clothing composedof toothed wires, a defleeting part may be provided on the edges of bothmold shaped hollow parts forming the slot for the issue of thecooling-water. This deflecting part will form a guide securing theheight up to which the teeth of the wire heated to redness are to behardened, whereas it eiiects at the same time in combination with theregulation of the pressure a throttling of the cooling water jet issuingin the slot in such a manner that only the points of the heated wire arehardened.

Figure 1 is a side elevation partly in section of a hardening apparatusused according to the invention. Fig. 2 is a device for supplyingcooling-water to such hardening apparatus. The Figs. 3 to 5 are modifiedforms of the apparatus shown in Figs. 1

and 2.

As shown in Fig. 1, the card clothing a is guided in the usual manner inthe direction of the arrow and passed along in close proximity to thepoint where the teeth are heated to redness with suitable speed. Theheating at the point mentioned may be effected by means of a nozzle 1)which may be suitably arranged in a manner to be set at will, wherebythe direction of the flame issuing from said nozzle may be adjustedaccording to requirement with regards to the points of the teeth to behardened. In close proximity to the nozzle 6 a pipe 0 is firmly ormovably arranged on a suitable level. This pipe which may be closed atboth ends is provided with a slot (Z extended along its entire lengthand is connected to a water supply pipe 6. As shown in Fig. 2 theopposite end of the pipe 0 may be connected by means of a flexible tubeor hose f, to a water supply it being under pressure and adapted to beturned on or off by a cock 9 or the like. According to the position ofthis cook a throughout even jet of cold or fresh water will issue fromthe slot (Z of the pipe 0 like a rising fountain to either a larger orsmaller height; to this water jet the flame issuing from the nozzle 6may be neared to such an extent that the points of the teeth are,immediately after being heated to redness moved or passed through suchwater-jet, as shown in Fig. 1. Thus the points mentioned are immediatelychilled and hardened without having to pass through and being exposed tothe air, whereby an oxidation of the points will be prevented. The waterdripping down is collected within an appropriate tank or receptacle 2'from which it is let oii in.- a suitable manner.

According to Fig. 3 the slit pipe or tubelike hollow body 0 is formed bytwo hollow bars which are mold-shaped for the purpose of forming achamber for the passage of the cooling water. These bars may be fastenedtogether by screws and can be separated at their upper edges byadjusting screw-bolts Z in such a manner that the slot (Z provided forthe issue of the rising cooling water jet may be narrowed or widened atwill. For the purpose of closing the space between the upper edges ofthe tube-like hollow chamber a suitable packing m may be insertedbet-ween these edeges. As shown in Fig. 4, this tube like hollow body 0may be constructed in such a manner that the upper edges forming theslot (Z for the issue of the water are provided with projections formingan angle-shaped slot and effecting a deflection oi"; the rising-water.The width of such slot may be adjusted in the manner described withreference to Fig. 3 so as to regulate the quantity and pressure of theissuing water. The tube-like hollow body 0 arranged within or above thewater collecting tank 2' by suitable holding devices especi ally servesto harden card clothing, formed by fiat toothed wires and is connectedby means of the pipe 0 and the flexible tube or hose to the pressurewater supply it to be regulated by a cock 9 or the like, as clearly seenby Fig. 41. In close proximity to one of the ends ofthe hollow body 0 asuitable burner or nozzle Z) for heating the points of the toothed wiresto redness is arranged in longitudinal axis of such body, Fig. 5. Thetoothed wire a is passed alongabove the burner and heated to such anextent that the teeth enter the upper deflected part of the slot (Zwithin the hollow body 0 in a red hot state, whereby the water suppliedunder pressure in consequence of regulating its pressure correspondinglyand due to the deflection taking place near the edges of the slot, onlyrises up to the mouth of such slot. Consequently only the points of thecon tinuously progressing wire are hardened whereas the back of the wireheated to redness remains thoroughly unhardened and flexible, so thatthis wire provided with glass hardened teeth may easily be mounted onrollers or cylinders without the fear of breaking or injuring the same.It is evident that the tube-like hollow body instead of being composedof two parts may also consist of one part only. The wire may be moved orted along by a drum on which the finished thread is wound up. During thepassage of the teeth through the slot (Z the back oart of the wire beingthicker than the teeth limits the depth down to which the teeth immerseinto the slot and partially shuts oil the slot against the issue ofwater. The rising water is carried along an a level with the teeth inthe direction in which the wire moves and dro )s into the tank 2'.

In consequence or being able to precisely adjust the height to which thejetof cooling water is to rise any contact between the water and thecard-cloth can absolutely and safely be prevented during the operationof hardening card-teeth, whereas when hardening toothed wire the coolingwater is prevented from running over the wire-back heated to redness notto be hardened. Thus by the hardening and chilling used in connectionwith the apparatus described and forming the object of the presentinvention,

a hardened card-clothing of first class quality is obtained.

What I claim is 1. In an apparatus for hardening the teeth of cardclothing or the points of toothed wire for carding machines, thecombination with a burner for heating the teeth until red hot, and beingarranged as near as possible to the heating point, of a longitudinalslit tube-1ike pipe adjacent to the point where the teeth are heated, awater conduit supplying cooling water in the said tube-like pipe, andmeans for continuously passing the teeth or points through the coolingwater, substantially as and for the purpose specified.

2. In an apparatus for hardening the teeth of card clothing or thepoints of toothed wire for carding machines, the combination with aburner for heating the teeth until red hot and being arranged as near aspossible to the heating point, of a longitudinal slit tube-like pipeadjacent to the point where the teeth are heated, a water conduitsupplying cooling water in the said tube-like pipe, means for regulatingthe pressure of the water supplied through such conduit and the risingheight of the ct issuing from the tube-like pipe and means forcontinuously passing the teeth or points through said jet, substantiallyas and for the purpose specified.

3. In an apparatus for hardening the teeth of card clothing or thepoints of toothed wire for carding machines, the combination with aburner for heating the teeth until red hot and being arranged as near aspossible to the heating point, of a longitudinal slit tube-like pipeadjacent to the point Where the teeth are heated, a Water conduitsupplying cooling water to the said tube-like pipe, means for regulatingthe pressure of the water supplied through such conduit and the risingheight of the jet issuing from the tube-like pipe, means for regulatingthe position of the jet relative to the heating means and means forcontinuously passing the teeth or points through said jet, Eubstantiallyas and for the purpose speci- 4. In an apparatus for hardening the teethof card clothing or the points of toothed wire for carding machines, thecombination with a burner for heating the teeth until red hot and beingas near as possible to the heating point, of a chamber formed of twosections provided with a slot at their meeting edges on one sidethereof, a pressure water supply, means for regulating the pressure ofsaid water supply means for connecting the chamber with the pressurewater supply, means for adjusting the width of the slot for the coolingwater jet to issue, and means for continuously passing the teeth orpoints through said jet, substantially as and for the purpose specified.

In testimony, that I claim the foregoing as my invention, I have signedmy name in presence of two witnesses, this nineteenth day of Dec. 1908.

LOUIS CONSTANTIN SCHNEIDER.

WVitnesses:

WILLIAM J. KONJDEN, FREDERICK J. DIETZMAN.

